Migrate to dep (#3972)

* Update makefile to use dep

* Migrate to dep

* Fix some deps

* Try to find a better version for golang.org/x/net

* Try to find a better version for golang.org/x/oauth2

vendor/github.com/blevesearch/bleve/index/upsidedown/benchmark_all.sh

@@ -1,8 +0,0 @@
-#!/bin/sh
-
-BENCHMARKS=`grep "func Benchmark" *_test.go  | sed 's/.*func //' | sed s/\(.*{//`
-
-for BENCHMARK in $BENCHMARKS
-do
-	go test -v -run=xxx -bench=^$BENCHMARK$ -benchtime=10s -tags 'forestdb leveldb'  | grep -v ok | grep -v PASS
-done